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Goshia [24]
3 years ago
7

Identify the acid-conjugate base pair in this balanced equation: H2SO4 + 2NaOH → 2H2O + Na2SO4

Chemistry
1 answer:
nasty-shy [4]3 years ago
3 0

Answer:

The answer is B. H2SO4/Na2SO4

Explanation:

thats the answer on ed.

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a number of people or things that are located close together or are considered or classed together.

Explanation:

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Support a scientist doing and experiment in nuclear fusion starts out with twelve atoms how many atoms will most likely results
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Ecosystems do not have similar climates and every plant is different True or false
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This is false. Some plants are the same or at least very similar
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2 years ago
A radioactive isotope of potassium (k) has a half-life of 20 minutes. if a 43 gram sample of this isotope is allowed to decay fo
Ksenya-84 [330]

Hello!

The half-life is the time of half-disintegration, it is the time in which half of the atoms of an isotope disintegrate.

We have the following data:

mo (initial mass) = 43 g

m (final mass after time T) = ? (in g)

x (number of periods elapsed) = ?

P (Half-life) = 20 minutes

T (Elapsed time for sample reduction) = 80 minutes

Let's find the number of periods elapsed (x), let us see:

T = x*P

80 = x*20

80 = 20\:x

20\:x = 80

x = \dfrac{80}{20}

\boxed{x = 4}

Now, let's find the final mass (m) of this isotope after the elapsed time, let's see:

m =  \dfrac{m_o}{2^x}

m =  \dfrac{43}{2^{4}}

m = \dfrac{43}{16}

\boxed{\boxed{m = 2.6875\:g}}\end{array}}\qquad\checkmark

I Hope this helps, greetings ... DexteR! =)

8 0
4 years ago
Determine the moles of oxygen gas (O2) needed to completely react with 1.975 moles of hydrogen gas (H2).
Pavlova-9 [17]

Answer:

0.9875 mole O₂

Explanation:

Rxn => H₂ + ¹/₂O₂ => H₂O

from above reaction, 1 mol H₂ requires ¹/₂ mol O₂ then 1.975 mol H₂ requires   ¹/₂(1.975 mol)O₂ or 0.9875 mol O₂.

6 0
3 years ago
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